The IDbConnection interface enables an inheriting class to implement a Connection class, which represents a unique session with a data source (for example, a network connection to a server). For more information about Connection classes, see Connecting to a Data Source in ADO.NET.

An application does not create an instance of the IDbConnection interface directly, but creates an instance of a class that inherits IDbConnection.

Classes that inherit IDbConnection must implement all inherited members, and typically define additional members to add provider-specific functionality. For example, the IDbConnection interface defines the ConnectionTimeout property. In turn, the SqlConnection class inherits this property, and also defines the PacketSize property.

Notes to Implementers:

To promote consistency among .NET Framework data providers, name the inheriting class in the form PrvClassname where Prv is the uniform prefix given to all classes in a specific .NET Framework data provider namespace. For example, Sql is the prefix of the SqlConnection class in the System.Data.SqlClient namespace.

When you inherit from the IDbConnection interface, you should implement the following constructors:

Item

Description

PrvConnection()

Initializes a new instance of the PrvConnection class.

PrvConnection(string connectionString)

Initializes a new instance of the PrvConnection class when given a string containing the connection string.